Gomphurus fraternus(Say, 1839)Midland Clubtail

Status-Global/State:

Distinguishing Characteristics:

Varying in length from 1.9 to 2.2 inches, this green-yellow dragonfly has black thoracic stripes. The abdomen is mostly black with green-yellow dorsal stripes and edges of the club in yellow. The legs are black for males, the hind thighs of females might have pale lateral stripes. The eyes are gray-green. Midland clubtails, on the northern edge of its range, may have more yellow, especially at the end of abdomen and yellow shins. Clubtail species are very similar to each other in some aspects, careful inspection is needed to identify them.

Description of Habitat/Range:

Ranging throughout northeastern United States and southeastern Canada, midland clubtails can be found at moderately to rapidly flowing rivers, large streams with clay or fine sand bottoms, and large lakes with emergent vegetation. It is found throughout Wisconsin but not necessarily in abundant numbers.

Flight Season:

Late May to early August in Wisconsin.

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

15%(111)

72%(520)

10%(72)

2%(15)

<1%(1)

<1%(1)

Shading illustrates monthly percentages of the total flight season records for the species.
Each flight season record is a unique date/location/observer combination where one or more adult or an
exuvia was recorded (excludes nymphs). The actual number of flight season records for each month is shown
in parentheses.

Flight seasons begin earlier in the southern
part of the state, often by a week or more. Also, flight charts may not be accurate for rare species because of
few data available.